1.) I'd call it a raise-cap, 2-bet cap is "technically correct" but probably less common to say. (Glad to see you care, many players call anything a XR:rolleyes:).
2a.) Flop decision is the easiest one in this hand. Once he donk-3-bets on the flop, you need to put him on a range (if not before). He is rarely on a draw (no way to buy the free card, and few players re-bluff with a small FD or SD with 98s here (though they probably should to some small extent)). A donker that didn't cap preflop is unlikely to be on QQ+. The most probable reason for you to be ahead is that he has TP and don't want to let you take a free card on the turn. I'd discount this probability because the board is dangerous (and he's a donker - they usually don't think on that level, if they do, they would need to have seen you raise for a free card (do you?)), and say he has a hand he likes pretty much. Flop is thus overplayed imo. In the event he is on a bluff, you don't want to discourage him by capping.
As an aside, flat-calling donks on the flop is almost never a bad strategy, whatever you hold and whatever he holds and whatever the board looks like. Don't want to beef out on this now because it is off topic.
2b.) Turn is definitely not weak-tight. If you capped flop on the theory that you were marginally ahead (with which I don't agree), then that turn card is one of the worst. A raise is totally out of the question. Some draws got there as well along with Ax hands. Can you fold? No. You get close to 12:1 and the gutshot SD alone is a reason good enough to stick in.
2c.) River is quite simple, because the river card is essentially a blank if my reasoning is correct about him not donk-3-betting FD's. It is actually a good card, and you should call given you called on the turn. Few people ever give up bluffs between turn and river (though they should). Note (and this is important), close to about half of his flop value range (JT) got counterfeited OTR. Some people just don't notice, and keep firing. [Some good players would sometimes exploitatively turn their JT into a bluff (though they rarely donk)!]
On the river, this is much like the the other hand (AA set on flush board). You are close to the top of your bluff-catching range getting 13:1 and folding river takes a read in order to be reasonably safe against exploitation. I don't hate the fold as much as some other players here probably do, but I'd definitely call based on the emphasized observation above.